I have to program a calculator which can calculate a faculty and a eulerian number. these formulars are given:
faculty: Number1! = 1*2*...*Number1
eulerian number: Number1
e= ∑ 1/k!
k=0
I have most of the code, but I don't know how to use thes formulars in my code.
<label for="zahl1"></label>
<input id="zahl1" type="text" placeholder="Zahl eingeben">
<label for="zahl2" type="text"></label>
<input id="zahl2" type="text" placeholder="Zahl eingeben"> <br>
<button id="facultyBtn" class="btn btn-info">F</button>
<button id="eulerschBtn" class="btn btn-info">e</button>
document.getElementById("facultyBtn").addEventListener("click", () => {
const zahl1Input = document.getElementById("zahl1");
const zahl2Input = document.getElementById("zahl2");
const zahl1 = Number(zahl1Input.value);
const zahl2 = Number(zahl2Input.value);
const F =
let ergebnis;
ergebnis = F
const ergebnisInput = document.getElementById("ergebnis");
ergebnisInput.innerText = ergebnis.toString();
})
document.getElementById("eulerschBtn").addEventListener("click", () => {
const zahl1Input = document.getElementById("zahl1");
const zahl2Input = document.getElementById("zahl2");
const zahl1 = Number(zahl1Input.value);
const zahl2 = Number(zahl2Input.value);
const e =
let ergebnis;
ergebnis = e
const ergebnisInput = document.getElementById("ergebnis");
ergebnisInput.innerText = ergebnis.toString();
})
})
So what I am missing in my code is what to write after "const f =" and "const e =" I would really appreciate some help. I am new to programming, but I have to finish this for school.
This is factorial (faculty), it's a classic:
function faculty(number) {
total = 1;
for (var i = 1; i <= number; i++) {
total = total * i;
}
return total;
}
console.log (faculty(3))As for eulerian number this is from geek4geeg.
function eulerian(n, m) {
if (m >= n || n == 0)
return 0;
if (m == 0)
return 1;
return (n - m) * eulerian(n - 1, m - 1) +
(m + 1) * eulerian(n - 1, m);
}
console.log(eulerian(4, 2))